[ *33 ] 



lowing to the public, which, from three fucceflive 

 years trial, I have found to anfwer in every rf- 

 fpecl. My difcovcry was owing to the following 

 accident: 



A neighbouring farmer nqt having a fufficiept 

 quantity of manure for ail his turnip land, was 

 under the ncceflity of fowing four acres unma- 

 nured. The eileel was, that the turnips on the 

 manured part of the land were moftly eaten off 

 by the fly; while four acres unmanured efcaped 

 without injury. 



Having a fmall farm which I occupy for my 

 own amufement, and being very anxious to pro- 

 mote improvements in agriculture, I determined 

 in the following feafon to make fome experiments 

 from the above hint. Accordingly, in the fum- 

 nur 1776, I manured five acres well for turnips, 

 and tilled three acres and a half in the ufual way 

 without any manure. Thofe which I manured 

 were almoft univerfally deftroyed by the fly, in fo 

 much, that I was obliged to fow mod of the land 

 over again. The three acres and half which had 

 no manure were intirely free from any injury. 

 It muft indeed be confefied, that when I came to 

 draw them, they were not nearly fo large plants as 

 the other. 



Q^3 Not 



